LG LT-B2461CL Service Manual
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LG LT-B2461CL Service Manual

LG LT-B2461CL Service Manual

Ceiling cassette air conditioner
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Table of Contents

Ceiling Cassette
Air Conditioner
SERVICE MANUAL
MODELS: LT-B2461CL/LT-B2461HL
LT-B2861CL/LT-B2861HL
LT-B2421CL/LT-B2421HL
LT-B2821CL/LT-B2821HL
LT-B3021CL/LT-B3021HL
LT-B3681CL/LT-B3681HL
LT-B3621CL/LT-B3621HL
LT-B3661CL/LT-B3661HL

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Summary of Contents for LG LT-B2461CL

  • Page 1 Ceiling Cassette Air Conditioner SERVICE MANUAL MODELS: LT-B2461CL/LT-B2461HL LT-B2861CL/LT-B2861HL LT-B2421CL/LT-B2421HL LT-B2821CL/LT-B2821HL LT-B3021CL/LT-B3021HL LT-B3681CL/LT-B3681HL LT-B3621CL/LT-B3621HL LT-B3661CL/LT-B3661HL...

  • Page 2: Table Of Contents

    Contents Functions Product Specifications (Cooling & Heating) Dimensions Refrigeration Cycle Diagram Wiring Diagram Operation Details Installation of Indoor, Outdoor Unit Test Running 3-way Valve Cycle Troubleshooting Guide Electronic Parts Troubleshooting Guide Electronic Control Device Schematic Diagram Exploded View and Replacement Parts List –2–...

  • Page 3: Functions

    Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (Thermistor) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control •...
  • Page 4 Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode ( Soft Dry Operation Mode ( Heating Operation Mode ( Auto Operation Mode ( (Cooling (Heating model only) model only) Fan Speed Selection (Low) (Med) (High) Room Temperature Display : High:39°C ↔ LOW:11°C Temperature Setting Down to 18°C Down to 16°C...

  • Page 5: Product Specifications (Cooling & Heating)

    Product Specifications (Cooling & Heating) 1. 60Hz Model Name B2421CL B2421HL B2821CL B3021CL B2821HL B3021HL Item Unit 24,000(6,048) 24,000(6,048) 28,000(7,056) 30,000(7,560) 28,000(7,056) 30,000(7,560) Cooling Capacity Btu/h(kcal/h) – 24,000(6,048) – – 28,000(7,056) 30,000(7,560) Heating Capacity Btu/h(kcal/h) Moisture Removal 1Ø, 220V, 60Hz Power Source Ø, V, Hz Indoor...
  • Page 6 2. 50Hz Model Name LT-B2461CL LT-B2461HL LT-B2861CL LT-B2861HL Item Unit 24,000(6,048) 24,000(6,048) 28,000(7,056) 28,000(7,056) Cooling Capacity Btu/h(kcal/h) – 24,000(6,048) – 28,000(7,056) Heating Capacity Btu/h(kcal/h) ℓ/h Moisture Removal 1Ø, 220V~240V, 50Hz Power Source , V, Hz Indoor Air Circulation /min Outdoor...
  • Page 7 Model Name B3681CL B3681HL B3661CL B3661HL B3621CL B3621HL Item Unit 36,000(9,072) 36,000(9,072) 36,000(9,072) 36,000(9,072) 36,000(9,072) 36,000(9,072) Cooling Capacity Btu/h(kcal/h) – 36,000(9,072) – 36,000(9,072) – 36,000(9,072) Heating Capacity Btu/h(kcal/h) Moisture Removal 3Ø, 380-415V, 50Hz 1Ø, 220V, 60Hz 1Ø, 220-240V, 50Hz Power Source Ø, V, Hz Indoor Air Circulation...

  • Page 8: Dimensions

    Dimensions Indoor Unit –8–...
  • Page 9 Outdoor Unit Gas side 3-way valve Liquid side 3-way valve MODEL LT-B2421CL/HL, LT-B2461CL/HL LT-B2861HL, LT-B2821HL, LTB3021HL LT-B2861CL, LT-B2821CL, LT-B3021CL 74.5 74.5 –9–...
  • Page 10 Outdoor Unit(LT-B3621CL/HL, B3661CL/HL, B3681CL/HL) 4-ø12Hole (Air intake vent) (Air intake vent) –10–...

  • Page 11: Refrigeration Cycle Diagram

    Refrigeration Cycle Diagram • COOLING ONLY INDOOR UNIT OUTDOOR UNIT CAPILLARY TUBE LIQUID SIDE HEAT HEAT EXCHANGER EXCHANGER (EVAPORATOR) (CONDENSER) COMPRESSOR GAS SIDE Elevation B(m) * Additional Pipe Size Length A(m) refrigerant MODEL (g/m) Max. Max. Rated Rated GAS LIQUID 24K, 28K, 30K BTU 5/8"...
  • Page 12 • HEAT PUMP INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE CHECK VALVE CAPILLARY TUBE HEAT HEAT EXCHANGER EXCHANGER GAS SIDE REVERSING VALVE COOLING COMPRESSOR HEATING Elevation B(m) * Additional Pipe Size Length A(m) refrigerant MODEL (g/m) Max. Max. Rated Rated GAS LIQUID 24K, 28K, 30K BTU 5/8"...

  • Page 13: Wiring Diagram

    Wiring Diagram (1) Indoor Unit 1. COOLING ONLY 2. HEAT PUMP –13–...
  • Page 14 (2) Outdoor Unit 2. LT-B2461HL/B2421HL 1. LT-B2461CL/B2861CL/B2421CL B2821CL/B3021CL COMP. Capacitor Capacitor MOTOR MOTOR COMP. CAPACITOR GN/YL P.T.C (OPTION) POWER REVERSING RELAY COIL POWER RELAY GN/YL GN/YL TERMINAL 1 ( N ) 2 ( L ) 3 ( N ) 4 ( L )
  • Page 15 5. LT-B3681CL Outdoor Unit Wiring Diagram R S T N 3Ø, 380-415V POWER SUPPLY THMO 3(N) 4(L) GN/YL OR YL BL BK OR YL BL BK NOTE BL : BLUE RD : RED BK : BLACK WH : WHITE BR : BROWN YL : YELLOW WIRING OF FIELD OR : ORANGE...
  • Page 16 6. LT-B3681HL Outdoor Unit Wiring Diagram C TH T/B1 R S T N 63H2 3Ø, 380-415V POWER SUPPLY 52F2 52F1 BL BK 3(N) 4(L) GN/YL THMO OR YL BL BK OR YL BL BK 20SV BK NOTE BL : BLUE RD : RED BK : BLACK WH : WHITE...
  • Page 17 7. LT-B3621CL/B3661CL Outdoor Unit Wiring Diagram GN/YL POWER SUPPLY THMO BL BK 3(N) 4(L) GN/YL OR YL BL BK OR YL BL BK NOTE BL : BLUE RD : RED BK : BLACK WH : WHITE BR : BROWN YL : YELLOW WIRING OF FIELD OR : ORANGE GN/YL : GREEN/YELLOW...
  • Page 18 8. LT-B3621HL/B3661HL Outdoor Unit Wiring Diagram C TH T/B1 GN/YL 63H2 POWER SUPPLY 52F2 52F1 BL BK 3(N) 4(L) GN/YL THMO OR YL BL BK OR YL BL BK 20SV BK NOTE BL : BLUE RD : RED BK : BLACK WH : WHITE BR : BROWN YL : YELLOW...

  • Page 19: Operation Details

    Operation Details (1) The function of main control 1. Time Delay Safety Control • 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) • 5sec... Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind. •...
  • Page 20 6. Heating Mode Operation (Except Cooling Model) The unit will operate according to the setting by the remote controller and the operation diagram is shown as following. Intake Air temp. minimum 3min Setting temp.+3°C (Compressor OFF) Setting temp. (Compressor ON) minimum minimum minimum...
  • Page 21 8. Defrost Control • Defrost operation is controlled by timer and sensing the outdoor piping temperature. • The defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from starting of heating operation. • Defrost ends after 9 minutes 30 seconds passed from starting of defrost operation or when the outdoor pipe temperature rises over 12°C even if before 12 minutes.

  • Page 22: Installation Of Indoor, Outdoor Unit

    Installation of Indoor, Outdoor Unit 1. Selection of the best location 1) Indoor unit • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation. Ceiling Ceiling Board Ceiling Board •...
  • Page 23 3) Piping length and the elevation Indoor unit Pipe Size Elevation B(m) * Additional Length A(m) refrigerant MODEL (g/m) Max. Max. GAS LIQUID Rated Rated 24K, 28K, 30K BTU 5/8" 3/8" 36K BTU 3/4" 3/8" Outdoor unit • Rated performance for refrigerant line length of: 5m •...
  • Page 24 2. Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are 840 (Ceiling opening) the same as those of the ceiling opening dimen- sions. 624(Hanging bolt) 800 Unit size Unit:mm CAUTION • This air-conditioner uses a drain pump. •...
  • Page 25 3. The Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 Air Conditioner body (W3/8 or M10) (accessory) Ceiling board Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Paper model...
  • Page 26 WIRED REMOTE CONTROL INSTALLATION DISASSEMBLING • Separate the under plate from Remote control box. Front case Lever carefully Remote control • Fix the cord clamps on the wall by the box open box body using a screw ø 3 tapping screws (accessory). driver, etc.
  • Page 27 5. Wiring Connection • Open the control box cover and connect the Remote control cord and Indoor power wires. Remote control cord Indoor Power wires Control Control box cover box cover fitting screw (4 units) [Air inlet side view] Wire taking inlet 1 Phase Terminal Block of Indoor Unit Terminal Block of Outdoor Unit...
  • Page 28 ELECTRICAL WIRING 1. All wiring must comply with LOCAL REGULATIONS. 2. Select a power source that is capable of supplying the current required by the air conditioner. 3. Feed the power source to the unit via a distribution switch board designed for this purpose. 4.
  • Page 29 6. Connecting Pipes to the Indoor Unit • Preparation of Piping Copper Main cause of gas leakage is defect in flaring Slanted Uneven Rough tube 90° work. Carry out correct flaring work in the following procedure. 1) Cut the pipes and the cable. Use the accessory piping kit or the pipes pur- chased locally.
  • Page 30 Piping Connection Liquid side 1. Form the piping according to its routing. Avoid bending and bending back the same piping point more than three times. (This will result in hardening Indoor the pipe.) unit 2. After deforming the piping, align centers of the Outdoor union fitting of the indoor unit and the piping, and Flare connection...
  • Page 31 7. Installation of Decorative Panel The decorative panel has its installation Before installing the decorative panel, direction. always remove the paper template. 1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.) The fixing screws (hexagon M5 screw) are included the decorative panel box.
  • Page 32 CAUTION Install certainly the decorative panel. Cool air leakage causes sweating. Water drops fall. Good example Bad example Air conditioner unit Air conditioner Cool air leakage unit (no good) Ceiling Ceiling board board Decorative Decorative panel panel Fit the insulator (this part) and be careful for cool air leakage 8.
  • Page 33 HEAT INSULATION 1. Use the heat insulation material for the refriger- ant piping which has an excellent heat-resis- Fastening band (accessory) tance (over 120°C). 2. Precautions in high humidity circumstance: This air conditioner has been tested according to the "KS Standard Conditions with Mist" and con- firmed that there is not any default.

  • Page 34: Test Running

    In case of the Outdoor Unit being installed above Seal a small opening position of the Indoor Unit. around the pipings with gum type sealer. 2. Tape the Pipings and Connecting cable from bottom to top. Trap 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room.
  • Page 35 2) Connection of power supply 1. Connect the power supply cord to the inde- pendent power supply. • Circuit breaker is required. 2. Operate the unit for fifteen minutes or more. 3) Evaluation of the performance 1. Measure the temperature of the intake and dis- charge air.

  • Page 36: 3-Way Valve

    3-way Valve 1. Pumping down Liquid side Indoor unit Open Outdoor unit 3-Way valve Gas side Closed 3-Way valve CLOSE CLOSE Purge the air • Procedure (6) Operate the air conditioner in cooling mode (1) Confirm that both liquid side and gas side and stop it when the gaug e indicates valves are set to the open position.
  • Page 37 1) Re-air purging (Re-installation) Liquid side Indoor unit Closed Outdoor unit 2-Way valve Gas side Closed 3-Way valve Gas cylinder OPEN CLOSE • Procedure (6) Disconnect the charge set and the gas (1) Confirm that both the liquid side valve and the cylinder, and set the 2-way and 3-way valves gas side valve are set to the closed position.
  • Page 38 2) Balance refrigerant of the 3-way valve (Gas leakage) Liquid side Indoor unit Outdoor unit 2-Way valve Open Gas side 3-Way valve Open OPEN CLOSE • Procedure (1) Confirm that both the liquid side and gas side (3) Open the valve (Lo side) on the charge set valves are set to the back seat.
  • Page 39 2. Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 2-Way valve Open Gas side 3-Way valve Open Vacuum pump OPEN CLOSE • Procedure (1) Connect the vacuum pump to the center hose (3) Close the valve (Lo side) on the charge set, of charge set center hose turn off the vacuum pump, and confirm that the gauge needle does not move (approxima-...
  • Page 40 3. Gas Charging (After Evacuation) Liquid side Indoor unit Open Outdoor unit 2-Way valve Gas side Open 3-Way valve Check valve Charging cylinder OPEN CLOSE • Procedure (1) Connect the charge hose to the charging This is different from previous procedures. cylinder.

  • Page 41: Cycle Troubleshooting Guide

    Cycle Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. difference : approx. 0°C All amount of refrigerant leaked out Current : less than 80% of Check refrigeration cycle rated current Temp. Difference Refrigerant leakege Temp.

  • Page 42: Electronic Parts Troubleshooting Guide

    Electronic Parts Troubleshooting Guide Possible Trouble 1 : The unit does not operate. Check the FUSE Is the input voltage and the wiring diagram. of transformer AC220V? Is the output voltage Is shorted the Check the main P.C.B of transformer about AC14V? transformer output? pattern.
  • Page 43 Possible Trouble 2 : The indoor fan does not operate. Is it the HOT It is normal operation. START mode? Is IC01M operated Exchange IC01M. normally? Is the each Relay Exchange Relay. any problem? Check the fan motor and connector. (CN-MOTOR) –43–...
  • Page 44 Possible Trouble 3 : Auto Air direction louver does not operate. Is IC01M operated Exchange IC01M. normally? Is the PIN 10 of Check the main P.C.B CN-AC2 DC12V? DC12V pattern. Check the step motor and connector. (CN-AC2, AC1) : Wired remote controller does not operate. Possible Trouble 4 Check the parts of Is the LCD operated...
  • Page 45 Possible Trouble 5 : Ineffective Heating Adjust operation mode. Is it Heating Mode? Does the temperature Adjust set temperature. set all right? Is IC01M operated Change IC01M. normally? Is 4way-valve operated? Check RY-4Way. Check the connector. (CN-OUT, CN-AC1.2) –45–...

  • Page 46: Electronic Control Device

    Electronic control device MAIN P.C.B ASM –46–...

  • Page 47: Schematic Diagram

    Schematic Diagram –47–...
  • Page 48 –48–...

  • Page 49: Exploded View And Replacement Parts List

    Exploded View and Replacement Parts List 1. Indoor Unit 249951 268714 354212 330870 352118 35511A 263230 130411 266012 158591 –49–...
  • Page 50 137213 146812 346810 152302 359011 130911-1 130911-3 135312 140570 130911-2 267110-1 267110-2 –50–...
  • Page 51 Parts List • MODEL: LT-B2421CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 52 Parts List • MODEL: LT-B2421HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 53 Parts List • MODEL: LT-B2461CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE...
  • Page 54 Parts List • MODEL: LT-B2461HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 55 Parts List • MODEL: LT-B2821CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 56 Parts List • MODEL: LT-B2821HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 57 Parts List • MODEL: LT-B2861CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 58 Parts List • MODEL: LT-B2861HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 59 Parts List • MODEL: LT-B3021CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 60 Parts List • MODEL: LT-B3021HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 61 Parts List • MODEL: LT-B3621CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 62 Parts List • MODEL: LT-B3621HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 63 Parts List • MODEL: LT-B3661CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 64 Parts List • MODEL: LT-B3661HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 65 Parts List • MODEL: LT-B3681CL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 66 Parts List • MODEL: LT-B3681HL LOCATION NO. PART NO. DESCRIPTION REMARKS 130411 3041A20001A BASE ASSY, INDOOR 130911-1 3091A30001A CABINET ASSY, INDOOR 130911-2 3091A30002A CABINET ASSY, INDOOR 130911-3 3091A30003A CABINET ASSY, INDOOR 135312 3531A10004B GRILLE ASSY, FRONT 137213 3721A10001M PANEL ASSY, SIDE 140570 4057AP4344A LOCKER ASSY...
  • Page 67 2. Outdoor Unit 2-1. MODEL: LT-B2461CL/B2461HL/B2861CL/B2421CL/B2421HL/B2821CL/B3021CL –67–...
  • Page 68 Parts List • MODEL: LT-B2421CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530AP2289V GRILLE ASSY, DISCHARGE(OUTDOOR) 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005G PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4681A20008J MOTOR ASSY, OUTDOOR 550140...
  • Page 69 Parts List • MODEL: LT-B2421HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530AP2289V GRILLE ASSY, DISCHARGE(OUTDOOR) 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005G PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4681A20008J MOTOR ASSY, OUTDOOR 550140...
  • Page 70 Parts List • MODEL: LT-B2461CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530A20007B GRILLE, DISCHARGE 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005G PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4680AP2135M...
  • Page 71 Parts List • MODEL: LT-B2461HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530AP2289V GRILLE ASSY, DISCHARGE(OUTDOOR) 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005G PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4680AP2135M MOTOR ASSY, OUTDOOR 550140...
  • Page 72 Parts List • MODEL: LT-B2821CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530AP2289V GRILLE ASSY, DISCHARGE(OUTDOOR) 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005A PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4681A20008J MOTOR ASSY, OUTDOOR 550140...
  • Page 73 Parts List • MODEL: LT-B2861CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530A20007B GRILLE, DISCHARGE 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005G PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4680AP2135M MOTOR ASSY, AC 550140 4A01334A...
  • Page 74 Parts List • MODEL: LT-B3021CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530AP2289V GRILLE ASSY, DISCHARGE(OUTDOOR) 349499 4948AP2527A ORIFICE 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266J COVER ASSY, TOP(OUTDOOR) 437210 3721A20005A PANEL ASSY, FRONT(OUTDOOR) 447910 2H02110A BARRIER ASSY, OUTDOOR 546810 4681A20008J MOTOR ASSY, OUTDOOR 550140...
  • Page 75 2-2. Outdoor Unit • MODEL: LT-B2861HL/B2821HL/B3021HL –75–...
  • Page 76 Parts List • MODEL: LT-B2821HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530A20007B GRILLE, DISCHARGE 137213-1 1A00202C PANEL ASSY, SIDE 137213-2 3A02284L PANEL ASSY, SIDE 263230 3Q35015G THERMISTOR ASSY 349499 4948AP2527A ORIFICE 350140 4A01489A ISOLATOR, MOTOR 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266H COVER ASSY, TOP(OUTDOOR)
  • Page 77 Parts List • MODEL: LT-B2861HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530A20007B GRILLE, DISCHARGE 137213-1 1A00202C PANEL ASSY, SIDE 137213-2 3A02284L PANEL ASSY, SIDE 263230 3Q35015G THERMISTOR ASSY 349499 4948AP2527A ORIFICE 350140 4A01489A ISOLATOR, MOTOR 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266H COVER ASSY, TOP(OUTDOOR)
  • Page 78 Parts List • MODEL: LT-B3021HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 3530A20007B GRILLE, DISCHARGE 137213-1 1A00202C PANEL ASSY, SIDE 137213-2 3A02284L PANEL ASSY, SIDE 263230 3Q35015G THERMISTOR ASSY 349499 4948AP2527A ORIFICE 350140 4A01489A ISOLATOR, MOTOR 430410 3041A30003K BASE ASSY, WELD(OUTDOOR) 435512 3H03266H COVER ASSY, TOP(OUTDOOR)
  • Page 79 2-3 Outdoor Unit • MODEL: LT-B3621CL/B3621HL/B3661CL/B3661HL/B3681CL/B3681HL –79–...
  • Page 80 Parts List LT-B3621CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512 2A00273A COVER ASSY, TOP(OUTDOOR) 435512 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB 447910 4761A90001A BARRIER ASSY, OUTDOOR...
  • Page 81 Parts List LT-B3621HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 263230 3Q35015H THERMISTOR ASSY 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512-1 2A00273A COVER ASSY, TOP(OUTDOOR) 435512-2 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB...
  • Page 82 Parts List LT-B3661CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512-1 2A00273A COVER ASSY, TOP(OUTDOOR) 435512-2 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB 447910 4761A90001A BARRIER ASSY, OUTDOOR...
  • Page 83 Parts List LT-B3661HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 263230 3Q35015H THERMISTOR ASSY 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512-1 2A00273A COVER ASSY, TOP(OUTDOOR) 435512-2 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB...
  • Page 84 Parts List LT-B3681CL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512-1 2A00273A COVER ASSY, TOP(OUTDOOR) 435512-2 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB 447910 4761A90001A BARRIER ASSY, OUTDOOR...
  • Page 85 Parts List LT-B3681HL LOCATION NO. PART NO. DESCRIPTION REMARKS 135301 2A00144Y GRILLE ASSY, DISCHARGE(OUTDOOR) 137213 3A01055Z PANEL, SIDE 263230 3Q35015H THERMISTOR ASSY 349499 2A00251Z ORIFICE 430410 3A01517W BASE ASSY, WELD(OUTDOOR) 435512-1 2A00273A COVER ASSY, TOP(OUTDOOR) 435512-2 3A01651A COVER ASSY, TOP(OUTDOOR) 437210 3A00426X PANEL ASSY, FRONT SUB...
  • Page 86 December, 2000 December, 2000 Printed in Korea P/No.: 3828A30023K Printed in Korea P/No.: 3828A20023K...

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